A Smithsonian Magazine blogger wrote: “Just a single 12-ounce bottle of beer can make you more attractive to the insects, one study found. But even though researchers had suspected this was because drinking increases the amount of ethanol excreted in sweat, or because it increases body temperature, neither of these factors were found to correlate with mosquito landings, making their affinity for drinkers something of a mystery.”

Scientists also say a slew of other factors — from blood type, metabolism and pregnancy status to the levels of exercise you do and carbon dioxide you emit — play roles.

Mosquitoes, for instance, can smell lactic acid and other substances in sweat, and go for the higher temperature bodies, Smithsonian Magazine reported.